Enable system flatpak via nix-flatpak and simplify HM

flake.lock

@@ -147,6 +147,22 @@
         "url": "https://git.lix.systems/lix-project/nixos-module"
       }
     },
+    "nix-flatpak": {
+      "locked": {
+        "lastModified": 1767983141,
+        "narHash": "sha256-7ZCulYUD9RmJIDULTRkGLSW1faMpDlPKcbWJLYHoXcs=",
+        "owner": "gmodena",
+        "repo": "nix-flatpak",
+        "rev": "440818969ac2cbd77bfe025e884d0aa528991374",
+        "type": "github"
+      },
+      "original": {
+        "owner": "gmodena",
+        "ref": "latest",
+        "repo": "nix-flatpak",
+        "type": "github"
+      }
+    },
     "nix-index-database": {
       "inputs": {
         "nixpkgs": [
@@ -210,6 +226,7 @@
       "inputs": {
         "lanzaboote": "lanzaboote",
         "lix-module": "lix-module",
+        "nix-flatpak": "nix-flatpak",
         "nix-index-database": "nix-index-database",
         "nixpkgs": "nixpkgs"
       }

flake.nix

@@ -7,6 +7,7 @@
       url = "github:nix-community/nix-index-database";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    nix-flatpak.url = "github:gmodena/nix-flatpak/?ref=latest";
     lix-module.url = "git+https://git.lix.systems/lix-project/nixos-module?ref=release-2.93";
     lix-module.inputs.nixpkgs.follows = "nixpkgs";
     lanzaboote.url = "github:nix-community/lanzaboote";

hosts/nanuqsaurus.nix

@@ -4,6 +4,8 @@
   imports = [
     inputs.lix-module.nixosModules.lixFromNixpkgs
     inputs.nix-index-database.nixosModules.nix-index
+    inputs.nix-flatpak.nixosModules.nix-flatpak
+    ../modules/system/flatpak.nix
     ../modules/system/base.nix
     ../modules/system/packages.nix
     ../modules/system/shell.nix

modules/system/flatpak.nix

@@ -0,0 +1,25 @@
+{ lib, ... }:
+
+{
+  services.flatpak = {
+    enable = true;
+    remotes = [
+      {
+        name = "flathub";
+        location = "https://dl.flathub.org/repo/flathub.flatpakrepo";
+      }
+      {
+        name = "flathub-beta";
+        location = "https://dl.flathub.org/beta-repo/flathub-beta.flatpakrepo";
+      }
+    ];
+    update.auto = {
+      enable = true;
+      onCalendar = "daily";
+    };
+    packages = [
+      "com.github.tchx84.Flatseal"
+      "io.github.kolunmi.Bazaar"
+    ];
+  };
+}

modules/system/packages.nix

@@ -6,6 +6,7 @@
     pkgs.distrobox
     pkgs.distroshelf
     pkgs.fastfetch
+    pkgs.flatpak
     pkgs.ghostty
     pkgs.git
     pkgs.home-manager

templates/home-flake.nix

@@ -7,12 +7,19 @@
         url = "github:nix-community/home-manager";
         inputs.nixpkgs.follows = "nixpkgs";
         };
+        nix-flatpak = {
+        url = "github:gmodena/nix-flatpak/?ref=latest";
+        inputs.nixpkgs.follows = "nixpkgs";
+        };
     };
 
-    outputs = { nixpkgs, home-manager, ... }: {
+    outputs = { nixpkgs, home-manager, nix-flatpak, ... }: {
         homeConfigurations."admin" = home-manager.lib.homeManagerConfiguration {
         pkgs = nixpkgs.legacyPackages.x86_64-linux;
-        modules = [ ./home.nix ];
+        modules = [
+            nix-flatpak.homeManagerModules.nix-flatpak
+            ./home.nix
+        ];
         };
     };
 }

templates/home-home.nix

@@ -1,4 +1,9 @@
-{ config, pkgs, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
 
 {
   home.username = "admin";
@@ -7,6 +12,17 @@
 
   nixpkgs.config.allowUnfree = true;
 
+  # User-level flatpaks
+  services.flatpak = {
+    enable = true;
+    packages = [ ];
+    update = {
+      auto.enable = true;
+      auto.onCalendar = "weekly";
+      onActivation = false;
+    };
+  };
+
   programs = {
     distrobox = {
       enable = true;
@@ -99,6 +115,9 @@
     DEFAULT_TERMINAL = "${pkgs.ghostty}/bin/ghostty";
     EDITOR = "${pkgs.micro}/bin/micro";
     DBX_CONTAINER_HOME_PREFIX = "$HOME/distrobox";
+    XDG_DATA_DIRS =
+      "${config.home.profileDirectory}/share:${config.xdg.dataHome}/applications:"
+      + "${config.xdg.dataHome}/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share";
   };
 
 }